Tire with component containing polyketone short fiber and epoxidized polyisoprene

Abstract

The present invention is directed to a pneumatic tire comprising at least one component, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polyketone short fiber having a length ranging from 0.5 to 20 mm having a weight ranging from 0.5 to 5 decitex, and from 1 to 30 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000.

1 . A pneumatic tire comprising at least one component, the at least one component comprising a rubber composition, the rubber composition comprising a diene based elastomer and from 1 to 30 parts by weight, per 100 parts by weight of elastomer (phr), of a polyketone short fiber having a length ranging from 0.5 to 20 mm having a weight ranging from 0.5 to 5 decitex, and from 1 to 30 phr of an epoxidized polyisoprene having a number-average molecular weight of 5000 to 100000. 
     
     
         2 . The pneumatic tire of  claim 1 , wherein the epoxidized polyisoprene has an epoxy group content of 0.1 to 15 meq/g. 
     
     
         3 . The pneumatic tire of  claim 1 , wherein the epoxidized polyisoprene has an epoxy group content of 0.3 to 10 meq/g. 
     
     
         4 . The pneumatic tire of  claim 1 , wherein the epoxidized polyisoprene is present in a concentration of 5 to 15 phr. 
     
     
         5 . The pneumatic tire of  claim 1 , wherein the epoxidized polyisoprene has a number-average molecular weight of 15000 to 70000. 
     
     
         6 . The pneumatic tire of  claim 1 , wherein the epoxidized polyisoprene has a number-average molecular weight of 20000 to 40000. 
     
     
         7 . The pneumatic tire of  claim 1 , wherein the amount of polyketone fiber ranges from 5 to 15 phr. 
     
     
         8 . The pneumatic tire of  claim 1 , wherein the at least one component is selected from the group consisting of apexes, flippers and chippers. 
     
     
         9 . The pneumatic tire of  claim 1 , wherein the component is a flipper. 
     
     
         10 . The pneumatic tire of  claim 9 , wherein the flipper is disposed with the short fibers substantially oriented in an angle ranging from 0 to 90 degrees with respect to the radial direction of the tire. 
     
     
         11 . The pneumatic tire of  claim 9 , wherein the flipper is disposed with the short fibers substantially oriented in an angle ranging from 0 to 45 degrees with respect to the radial direction of the tire. 
     
     
         12 . The pneumatic tire of  claim 9 , wherein the flipper is disposed with the short fibers substantially oriented in an angle ranging from 0 to 20 degrees with respect to the radial direction of the tire. 
     
     
         13 . The pneumatic tire of  claim 9 , wherein the flipper is disposed with the short fibers substantially oriented in an angle ranging from 0 to 10 degrees with respect to the radial direction of the tire.